UPSC Static Quiz – Geography : 24 September 2025

UPSC Static Quiz – Geography : 24 September 2025 We will post 5 questions daily on static topics mentioned in the UPSC civil services preliminary examination syllabus. Each week will focus on a specific topic from the syllabus, such as History of India and Indian National Movement, Indian and World Geography, and more. We are excited to bring you our daily UPSC Static Quiz, designed to help you prepare for the UPSC Civil Services Preliminary Examination. Each day, we will post 5 questions on static topics mentioned in the UPSC syllabus. This week, we are focusing on Indian and World Geography.

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• Question 1 of 5 1. Question Consider the following statements regarding the mechanism of the Indian Monsoon: The differential heating and cooling of land and sea is the primary driver of the monsoon. The northward shift of the Inter-Tropical Convergence Zone (ITCZ) in summer is crucial for the onset of the Southwest Monsoon. The presence of the high-pressure area over the Tibetan plateau in summer intensifies the monsoon winds. How many of the above statements are correct? (a) Only one (b) Only two (c) All three (d) None Correct Solution: B Statement 1 is correct. The most fundamental mechanism driving the monsoon is the differential heating and cooling of land and water. During the summer, the vast landmass of the Indian subcontinent heats up much faster than the surrounding Indian Ocean. This creates an intense low-pressure area over the landmass and a comparatively high-pressure area over the sea. This pressure gradient causes winds to blow from the sea to the land, bringing moisture with them. The reverse happens in winter, leading to the Northeast Monsoon. Statement 2 is correct. The Inter-Tropical Convergence Zone (ITCZ) is a low-pressure belt near the equator where the trade winds converge. Following the apparent movement of the sun, this belt shifts northwards during the summer in the Northern Hemisphere. By June, it is positioned over the Gangetic plain. This northward shift of the ITCZ is critical as it creates the monsoon trough of low pressure that attracts the moisture-laden winds from the Indian Ocean, which are essentially the Southeast Trade winds that cross the equator and get deflected to become the Southwest Monsoon. Statement 3 is incorrect. The Tibetan plateau plays a critical role, but it acts as an intensely heated high-altitude heat source in summer. This intense heating creates a strong low-pressure area over the plateau, not a high-pressure area. This low-pressure system at high altitudes further strengthens the vertical convection and enhances the pull of the monsoon winds towards the subcontinent. A high-pressure area would suppress the monsoon. Incorrect Solution: B Statement 1 is correct. The most fundamental mechanism driving the monsoon is the differential heating and cooling of land and water. During the summer, the vast landmass of the Indian subcontinent heats up much faster than the surrounding Indian Ocean. This creates an intense low-pressure area over the landmass and a comparatively high-pressure area over the sea. This pressure gradient causes winds to blow from the sea to the land, bringing moisture with them. The reverse happens in winter, leading to the Northeast Monsoon. Statement 2 is correct. The Inter-Tropical Convergence Zone (ITCZ) is a low-pressure belt near the equator where the trade winds converge. Following the apparent movement of the sun, this belt shifts northwards during the summer in the Northern Hemisphere. By June, it is positioned over the Gangetic plain. This northward shift of the ITCZ is critical as it creates the monsoon trough of low pressure that attracts the moisture-laden winds from the Indian Ocean, which are essentially the Southeast Trade winds that cross the equator and get deflected to become the Southwest Monsoon. Statement 3 is incorrect. The Tibetan plateau plays a critical role, but it acts as an intensely heated high-altitude heat source in summer. This intense heating creates a strong low-pressure area over the plateau, not a high-pressure area. This low-pressure system at high altitudes further strengthens the vertical convection and enhances the pull of the monsoon winds towards the subcontinent. A high-pressure area would suppress the monsoon.

#### 1. Question

Consider the following statements regarding the mechanism of the Indian Monsoon:

• The differential heating and cooling of land and sea is the primary driver of the monsoon.

• The northward shift of the Inter-Tropical Convergence Zone (ITCZ) in summer is crucial for the onset of the Southwest Monsoon.

• The presence of the high-pressure area over the Tibetan plateau in summer intensifies the monsoon winds.

How many of the above statements are correct?

• (a) Only one

• (b) Only two

• (c) All three

Solution: B

• Statement 1 is correct. The most fundamental mechanism driving the monsoon is the differential heating and cooling of land and water. During the summer, the vast landmass of the Indian subcontinent heats up much faster than the surrounding Indian Ocean. This creates an intense low-pressure area over the landmass and a comparatively high-pressure area over the sea. This pressure gradient causes winds to blow from the sea to the land, bringing moisture with them. The reverse happens in winter, leading to the Northeast Monsoon.

• Statement 2 is correct. The Inter-Tropical Convergence Zone (ITCZ) is a low-pressure belt near the equator where the trade winds converge. Following the apparent movement of the sun, this belt shifts northwards during the summer in the Northern Hemisphere. By June, it is positioned over the Gangetic plain. This northward shift of the ITCZ is critical as it creates the monsoon trough of low pressure that attracts the moisture-laden winds from the Indian Ocean, which are essentially the Southeast Trade winds that cross the equator and get deflected to become the Southwest Monsoon.

• Statement 3 is incorrect. The Tibetan plateau plays a critical role, but it acts as an intensely heated high-altitude heat source in summer. This intense heating creates a strong low-pressure area over the plateau, not a high-pressure area. This low-pressure system at high altitudes further strengthens the vertical convection and enhances the pull of the monsoon winds towards the subcontinent. A high-pressure area would suppress the monsoon.

Solution: B

• Question 2 of 5 2. Question With reference to the ‘October Heat’, consider the following statements: Statement-I: The period following the withdrawal of the Southwest Monsoon is marked by oppressive weather conditions with high temperature and humidity. Statement-II: This period is characterized by clear skies and a significant decrease in wind velocity, leading to a lack of ventilation. Which one of the following is correct in respect of the above statements? (a) Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I (b) Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I (c) Statement-I is correct but Statement-II is incorrect (d) Statement-I is incorrect but Statement-II is correct Correct Solution: A Statement-I is correct. The month of October marks the transition from the hot, rainy season to the dry winter season. As the monsoon trough weakens and retreats southwards, the rains cease, but the land is still moist from the preceding rainy season. The combination of a rise in temperature and the high amount of moisture in the air leads to very high relative humidity. This combination of high temperature and high humidity results in oppressive, sultry weather, which is commonly referred to as the ‘October Heat’. Statement-II is correct. During this period, the low-pressure system over northern India weakens significantly. The skies become clear of clouds, allowing for intense solar radiation to reach the ground, which raises the temperature. Concurrently, the pressure gradient becomes weak, resulting in very light and variable winds. This lack of strong winds prevents the mixing and dispersal of the hot, humid air mass, leading to a feeling of stuffiness and oppression. Statement-II provides the meteorological reasons for the conditions described in Statement-I. Incorrect Solution: A Statement-I is correct. The month of October marks the transition from the hot, rainy season to the dry winter season. As the monsoon trough weakens and retreats southwards, the rains cease, but the land is still moist from the preceding rainy season. The combination of a rise in temperature and the high amount of moisture in the air leads to very high relative humidity. This combination of high temperature and high humidity results in oppressive, sultry weather, which is commonly referred to as the ‘October Heat’. Statement-II is correct. During this period, the low-pressure system over northern India weakens significantly. The skies become clear of clouds, allowing for intense solar radiation to reach the ground, which raises the temperature. Concurrently, the pressure gradient becomes weak, resulting in very light and variable winds. This lack of strong winds prevents the mixing and dispersal of the hot, humid air mass, leading to a feeling of stuffiness and oppression. Statement-II provides the meteorological reasons for the conditions described in Statement-I.

#### 2. Question

With reference to the ‘October Heat’, consider the following statements:

Statement-I: The period following the withdrawal of the Southwest Monsoon is marked by oppressive weather conditions with high temperature and humidity.

Statement-II: This period is characterized by clear skies and a significant decrease in wind velocity, leading to a lack of ventilation.

Which one of the following is correct in respect of the above statements?

• (a) Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I

• (b) Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I

• (c) Statement-I is correct but Statement-II is incorrect

• (d) Statement-I is incorrect but Statement-II is correct

Solution: A

• Statement-I is correct. The month of October marks the transition from the hot, rainy season to the dry winter season. As the monsoon trough weakens and retreats southwards, the rains cease, but the land is still moist from the preceding rainy season. The combination of a rise in temperature and the high amount of moisture in the air leads to very high relative humidity. This combination of high temperature and high humidity results in oppressive, sultry weather, which is commonly referred to as the ‘October Heat’.

• Statement-II is correct. During this period, the low-pressure system over northern India weakens significantly. The skies become clear of clouds, allowing for intense solar radiation to reach the ground, which raises the temperature. Concurrently, the pressure gradient becomes weak, resulting in very light and variable winds. This lack of strong winds prevents the mixing and dispersal of the hot, humid air mass, leading to a feeling of stuffiness and oppression.

• Statement-II provides the meteorological reasons for the conditions described in Statement-I.

Solution: A

• Statement-II provides the meteorological reasons for the conditions described in Statement-I.

• Question 3 of 5 3. Question A particular region in India is characterized by the following climatic features: It lies in the rain-shadow area of the Western Ghats. It experiences a long dry season and a short wet season. The mean annual rainfall is less than 75 cm. The natural vegetation is tropical thorn forest and savanna. According to Koeppen’s climatic classification, this region would be classified as: (a) Amw (Monsoon with short dry season) (b) As (Monsoon with dry summer) (c) Aw (Tropical Savanna) (d) BShw (Semi-arid Steppe) Correct Solution: C (a) Amw represents a monsoon climate with a short dry season. This is characteristic of the Malabar Coast (west coast), which receives very heavy rainfall (over 250 cm) and has a very short dry period. This does not match the description. (b) As represents a monsoon climate where the dry season is in the summer (high sun period). This is unique to the Coromandel Coast (Tamil Nadu coast), which receives most of its rain from the winter (Northeast) monsoon. This does not match the description of being in the rain-shadow of the Western Ghats. (c) Aw represents a tropical savanna climate. The ‘w’ signifies a distinct dry winter season. This climate type is found over most of the Peninsular Plateau, excluding the windward side of the Western Ghats and the Coromandel coast. This region lies in the rain-shadow of the Western Ghats, receives moderate rainfall (around 75 cm) primarily in summer, has a long dry season, and supports savanna-type vegetation. This perfectly matches the given description. (d) BShw represents a semi-arid steppe climate. While it is a rain-shadow climate, it is characterized by much lower rainfall (typically 30-60 cm) and is found in the interior parts of the Deccan plateau in Karnataka and parts of Rajasthan. The ‘Aw’ classification covers a much larger portion of the rain-shadow zone with rainfall closer to the 75 cm mark. Incorrect Solution: C (a) Amw represents a monsoon climate with a short dry season. This is characteristic of the Malabar Coast (west coast), which receives very heavy rainfall (over 250 cm) and has a very short dry period. This does not match the description. (b) As represents a monsoon climate where the dry season is in the summer (high sun period). This is unique to the Coromandel Coast (Tamil Nadu coast), which receives most of its rain from the winter (Northeast) monsoon. This does not match the description of being in the rain-shadow of the Western Ghats. (c) Aw represents a tropical savanna climate. The ‘w’ signifies a distinct dry winter season. This climate type is found over most of the Peninsular Plateau, excluding the windward side of the Western Ghats and the Coromandel coast. This region lies in the rain-shadow of the Western Ghats, receives moderate rainfall (around 75 cm) primarily in summer, has a long dry season, and supports savanna-type vegetation. This perfectly matches the given description. (d) BShw represents a semi-arid steppe climate. While it is a rain-shadow climate, it is characterized by much lower rainfall (typically 30-60 cm) and is found in the interior parts of the Deccan plateau in Karnataka and parts of Rajasthan. The ‘Aw’ classification covers a much larger portion of the rain-shadow zone with rainfall closer to the 75 cm mark.

#### 3. Question

A particular region in India is characterized by the following climatic features:

• It lies in the rain-shadow area of the Western Ghats.

• It experiences a long dry season and a short wet season.

• The mean annual rainfall is less than 75 cm.

• The natural vegetation is tropical thorn forest and savanna.

According to Koeppen’s climatic classification, this region would be classified as:

• (a) Amw (Monsoon with short dry season)

• (b) As (Monsoon with dry summer)

• (c) Aw (Tropical Savanna)

• (d) BShw (Semi-arid Steppe)

Solution: C

• (a) Amw represents a monsoon climate with a short dry season. This is characteristic of the Malabar Coast (west coast), which receives very heavy rainfall (over 250 cm) and has a very short dry period. This does not match the description.

• (b) As represents a monsoon climate where the dry season is in the summer (high sun period). This is unique to the Coromandel Coast (Tamil Nadu coast), which receives most of its rain from the winter (Northeast) monsoon. This does not match the description of being in the rain-shadow of the Western Ghats.

• (c) Aw represents a tropical savanna climate. The ‘w’ signifies a distinct dry winter season. This climate type is found over most of the Peninsular Plateau, excluding the windward side of the Western Ghats and the Coromandel coast. This region lies in the rain-shadow of the Western Ghats, receives moderate rainfall (around 75 cm) primarily in summer, has a long dry season, and supports savanna-type vegetation. This perfectly matches the given description.

• (d) BShw represents a semi-arid steppe climate. While it is a rain-shadow climate, it is characterized by much lower rainfall (typically 30-60 cm) and is found in the interior parts of the Deccan plateau in Karnataka and parts of Rajasthan. The ‘Aw’ classification covers a much larger portion of the rain-shadow zone with rainfall closer to the 75 cm mark.

Solution: C

• Question 4 of 5 4. Question Consider the following statements regarding rainfall distribution in India: The Coromandel coast receives the bulk of its annual rainfall from the Northeast Monsoon. Rainfall generally decreases from east to west across the Northern Plains. The Arabian Sea branch of the Southwest Monsoon is significantly weaker than the Bay of Bengal branch. How many of the above statements are correct? (a) Only one (b) Only two (c) All three (d) None Correct Solution: B Statement 1 is correct. The Coromandel Coast, located in Tamil Nadu and southern Andhra Pradesh, lies in the rain-shadow of the Western Ghats for the Southwest Monsoon. Therefore, it receives very little rainfall during the summer months. However, during October-December, the retreating monsoon winds, known as the Northeast Monsoon, pick up moisture from the Bay of Bengal and cause heavy rainfall along this coast. This is the primary rainy season for the region. Statement 2 is correct. As the Bay of Bengal branch of the Southwest Monsoon moves up the Gangetic plains, it progressively sheds its moisture. The moisture content of the winds decreases as they travel westwards. Consequently, there is a general trend of decreasing rainfall from east to west. For example, Kolkata receives around 120 cm of annual rainfall, Patna receives around 100 cm, Prayagraj receives around 90 cm, and Delhi receives only around 60 cm. Statement 3 is incorrect. The Arabian Sea branch of the Southwest Monsoon is actually stronger than the Bay of Bengal branch. It carries more moisture and contributes to a larger portion of the total monsoon rainfall in India. While the Bay of Bengal branch is crucial for rainfall in the northeast and the northern plains, the Arabian Sea branch is responsible for the intense rainfall on the Western Ghats and across large parts of central and western India. Incorrect Solution: B Statement 1 is correct. The Coromandel Coast, located in Tamil Nadu and southern Andhra Pradesh, lies in the rain-shadow of the Western Ghats for the Southwest Monsoon. Therefore, it receives very little rainfall during the summer months. However, during October-December, the retreating monsoon winds, known as the Northeast Monsoon, pick up moisture from the Bay of Bengal and cause heavy rainfall along this coast. This is the primary rainy season for the region. Statement 2 is correct. As the Bay of Bengal branch of the Southwest Monsoon moves up the Gangetic plains, it progressively sheds its moisture. The moisture content of the winds decreases as they travel westwards. Consequently, there is a general trend of decreasing rainfall from east to west. For example, Kolkata receives around 120 cm of annual rainfall, Patna receives around 100 cm, Prayagraj receives around 90 cm, and Delhi receives only around 60 cm. Statement 3 is incorrect. The Arabian Sea branch of the Southwest Monsoon is actually stronger than the Bay of Bengal branch. It carries more moisture and contributes to a larger portion of the total monsoon rainfall in India. While the Bay of Bengal branch is crucial for rainfall in the northeast and the northern plains, the Arabian Sea branch is responsible for the intense rainfall on the Western Ghats and across large parts of central and western India.

#### 4. Question

Consider the following statements regarding rainfall distribution in India:

• The Coromandel coast receives the bulk of its annual rainfall from the Northeast Monsoon.

• Rainfall generally decreases from east to west across the Northern Plains.

• The Arabian Sea branch of the Southwest Monsoon is significantly weaker than the Bay of Bengal branch.

How many of the above statements are correct?

• (a) Only one

• (b) Only two

• (c) All three

Solution: B

• Statement 1 is correct. The Coromandel Coast, located in Tamil Nadu and southern Andhra Pradesh, lies in the rain-shadow of the Western Ghats for the Southwest Monsoon. Therefore, it receives very little rainfall during the summer months. However, during October-December, the retreating monsoon winds, known as the Northeast Monsoon, pick up moisture from the Bay of Bengal and cause heavy rainfall along this coast. This is the primary rainy season for the region.

• Statement 2 is correct. As the Bay of Bengal branch of the Southwest Monsoon moves up the Gangetic plains, it progressively sheds its moisture. The moisture content of the winds decreases as they travel westwards. Consequently, there is a general trend of decreasing rainfall from east to west. For example, Kolkata receives around 120 cm of annual rainfall, Patna receives around 100 cm, Prayagraj receives around 90 cm, and Delhi receives only around 60 cm.

• Statement 3 is incorrect. The Arabian Sea branch of the Southwest Monsoon is actually stronger than the Bay of Bengal branch. It carries more moisture and contributes to a larger portion of the total monsoon rainfall in India. While the Bay of Bengal branch is crucial for rainfall in the northeast and the northern plains, the Arabian Sea branch is responsible for the intense rainfall on the Western Ghats and across large parts of central and western India.

Solution: B

• Question 5 of 5 5. Question With reference to Western Disturbances, consider the following statements: They are shallow cyclonic depressions originating over the eastern Mediterranean Sea. They are steered towards India by the subtropical westerly jet stream. They are primarily responsible for causing snowfall in the Himalayas and rainfall in the northwestern plains during the summer season. How many of the above statements are incorrect? (a) Only one (b) Only two (c) All three (d) None Correct Solution: A Statement 1 is correct. Western Disturbances are extra-tropical storms that originate as shallow cyclonic depressions over the Mediterranean Sea and the surrounding region. They are a key feature of the winter weather in the Indian subcontinent. Statement 2 is correct. These weather systems do not move on their own. They are carried or ‘steered’ eastwards from the Mediterranean region across West Asia (Iran, Afghanistan, Pakistan) and into India by the subtropical westerly jet stream, which flows at high altitudes in the upper troposphere. The position and strength of this jet stream determine the track and intensity of the disturbances reaching India. Statement 3 is incorrect. Western Disturbances are a phenomenon of the winter season, not the summer season. They are the primary cause of the much-needed winter precipitation in Northwestern India. This precipitation is in the form of snowfall in the higher reaches of the Himalayas (crucial for glaciers and perennial rivers) and as rainfall in the plains of Punjab, Haryana, Delhi, and western Uttar Pradesh. This winter rain is highly beneficial for rabi crops, especially wheat. Incorrect Solution: A Statement 1 is correct. Western Disturbances are extra-tropical storms that originate as shallow cyclonic depressions over the Mediterranean Sea and the surrounding region. They are a key feature of the winter weather in the Indian subcontinent. Statement 2 is correct. These weather systems do not move on their own. They are carried or ‘steered’ eastwards from the Mediterranean region across West Asia (Iran, Afghanistan, Pakistan) and into India by the subtropical westerly jet stream, which flows at high altitudes in the upper troposphere. The position and strength of this jet stream determine the track and intensity of the disturbances reaching India. Statement 3 is incorrect. Western Disturbances are a phenomenon of the winter season, not the summer season. They are the primary cause of the much-needed winter precipitation in Northwestern India. This precipitation is in the form of snowfall in the higher reaches of the Himalayas (crucial for glaciers and perennial rivers) and as rainfall in the plains of Punjab, Haryana, Delhi, and western Uttar Pradesh. This winter rain is highly beneficial for rabi crops, especially wheat.

#### 5. Question

With reference to Western Disturbances, consider the following statements:

• They are shallow cyclonic depressions originating over the eastern Mediterranean Sea.

• They are steered towards India by the subtropical westerly jet stream.

• They are primarily responsible for causing snowfall in the Himalayas and rainfall in the northwestern plains during the summer season.

How many of the above statements are incorrect?

• (a) Only one

• (b) Only two

• (c) All three

Solution: A

• Statement 1 is correct. Western Disturbances are extra-tropical storms that originate as shallow cyclonic depressions over the Mediterranean Sea and the surrounding region. They are a key feature of the winter weather in the Indian subcontinent.

• Statement 2 is correct. These weather systems do not move on their own. They are carried or ‘steered’ eastwards from the Mediterranean region across West Asia (Iran, Afghanistan, Pakistan) and into India by the subtropical westerly jet stream, which flows at high altitudes in the upper troposphere. The position and strength of this jet stream determine the track and intensity of the disturbances reaching India.

• Statement 3 is incorrect. Western Disturbances are a phenomenon of the winter season, not the summer season. They are the primary cause of the much-needed winter precipitation in Northwestern India. This precipitation is in the form of snowfall in the higher reaches of the Himalayas (crucial for glaciers and perennial rivers) and as rainfall in the plains of Punjab, Haryana, Delhi, and western Uttar Pradesh. This winter rain is highly beneficial for rabi crops, especially wheat.

Solution: A

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